﻿using System.Threading;
using DM4;
using sscore;
using System;
using System.Collections.Generic;
using sscore.Utils;
using System.Text.RegularExpressions;
using System.IO;
using sscore.Requests;

namespace HI
{
    public class HI : ModuleBase
    {
        private readonly string _searchUrl;
        private readonly string _offenderLink;
        private readonly string _imageLink;
        private const string StateName = "HI";
        private ResultFile _imagesResultFile;
        readonly string[] _searchParam = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

        public HI()
        {
            //initialize main system constants
            ModuleCode = "SO_HI";
            Description = "HI Sex Offenders";
            Version = "1.0";

            //for creating sessions
            StartParam = 0;
            StopParam = _searchParam.Length - 1;

            //initialize help 
            AddToHelp(DM4Consts.StartPosition, String.Format("{0}...{1}", StartParam, StopParam));
            AddToHelp(DM4Consts.EndPositon, String.Format("{0}...{1}", StartParam, StopParam));

            AddToHelp(DM4Consts.IsDownload, "true|false");
            AddToHelp(DM4Consts.IsDownloadImg, "true|false");
            AddToHelp(DM4Consts.InsertToDb, "false|true", "(Expected: servername, dbname)");
            AddToHelp(DM4Consts.ServerName, "");
            AddToHelp(DM4Consts.DbName, "");
            AddToHelp(DM4Consts.IsClearDb, "false|true");
            AddToHelp(DM4Consts.TestParam, "false|true");

            RootUrl = "http://sexoffenders.ehawaii.gov/";
            _searchUrl = RootUrl + "sexoffender/results,0,0,0,a,l,,,{0},,,,,.html";
            _offenderLink = RootUrl + "sexoffender/details,{0}.html";
            _imageLink = RootUrl + "sexoffender/resources/{0}.jpg";
        }

        private void SetParametersDefaults()
        {
            Params.CreateBooleanParam(DM4Consts.IsDownload, true);
            Params.CreateBooleanParam(DM4Consts.IsDownloadImg, true);
            Params.CreateBooleanParam(DM4Consts.InsertToDb, false);
            Params.CreateBooleanParam(DM4Consts.IsClearDb, false);
            Params.CreateStringParam(DM4Consts.DbName, "");
            Params.CreateStringParam(DM4Consts.ServerName, "");
            Params.CreateIntegerParam(DM4Consts.StartPosition, StartParam);
            Params.CreateIntegerParam(DM4Consts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
            Params.CreateIntegerParam(DM4Consts.EndPositon, StopParam);
            Params.CreateIntegerParam(DM4Consts.LastRecord, 0);
        }

        public override OperationResult Init(IDM4Core iCore, DmTaskParams param)
        {
            //use basic initialization sequence
            base.Init(iCore, param);

            SetParametersDefaults();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult Start()
        {
            DoWork();
            return new OperationResult { Result = DM4Consts.Ok };
        }

        public override OperationResult DoWork()
        {
            OperationResult or = new OperationResult { Result = DM4Consts.ErrorUnknown };

            if (!Ct.IsCancellationRequested)
            {
                WriteLog("Start parameters:", MessageType.Warning);
                foreach (KeyValuePair<string, string> kvp in Params.GetDictionary()) //get all existing parameters
                    WriteLog(String.Format("Key = {0}, Value = {1}", kvp.Key, kvp.Value), MessageType.Warning);

                if (Params.GetBooleanParam(DM4Consts.IsDownload))
                    Load();

                if (Params.GetBooleanParam(DM4Consts.InsertToDb))
                    if ((Params.GetStringParam(DM4Consts.DbName) == "") || (Params.GetStringParam(DM4Consts.ServerName) == ""))
                    {
                        or.Message = String.Format("{0} or {1} is empty", DM4Consts.DbName, DM4Consts.ServerName);
                        ResultCode = DM4Consts.SessionResultCodeError;
                        ResultMessage = or.Message;
                        UpdateStatus(DmConsts.Error);
                        WriteErrorLog(or.Message); //writting to error and session log   

                        return or;
                    }
                    else
                    {
                        //insert offenders to db 
                        UpdateStatus(DM4Consts.SessionInsertToDb);

                        Offenders.OffInsertToDatabase(StateName, Params.GetStringParam(DmConsts.DbName),
                             Params.GetStringParam(DmConsts.ServerName), ResultDir, Params.GetBooleanParam(DmConsts.IsClearDb),
                             WriteLog);

                    }

                //check if need abort task
                if (Ct.IsCancellationRequested)
                {
                    ResultCode = DM4Consts.SessionResultTerminateByUser;
                    ResultMessage = "Session terminated by user";
                    UpdateStatus(DM4Consts.SessionWait);
                    WriteLog("Session aborted by user", MessageType.Cool);
                }
                else
                {
                    UpdateProgress(1);
                    ResultCode = DM4Consts.SessionResultCodeOk;
                    ResultMessage = String.Format("Session complete, errors : {0}, records : {1}", TaskParams.ErrorCount, TaskParams.RecordCount);
                    UpdateStatus(DM4Consts.SessionComplete);
                    WriteLog("------------Finish----------------", MessageType.Cool);
                }
            }
            else
            {
                ResultCode = DM4Consts.SessionResultTerminateByUser;
                ResultMessage = "Session terminated by user";
                UpdateStatus(DM4Consts.SessionWait);
                WriteLog("Session aborted by user", MessageType.Cool);
            }


            return or;
        }

        private void Load()
        {
            string resultFileName = String.Format("{0}\\{1}.{2}", ResultDir, TaskParams.SessionId, DmConsts.ResultFilesExtension);
            bool workFlag = true;

            ResultFile = new ResultFile(resultFileName, OffendersResult.GetHeader());
            _imagesResultFile = new ResultFile(String.Format("{0}\\{1}_images.{2}", ResultDir, TaskParams.SessionId, DM4Consts.ResultFilesExtension), "FileName|FileUrl");
            try
            {
                while (workFlag)
                {
                    //рабочий цикл
                    string error;

                    try
                    {
                        error = "";  //Required!!  /*if (!String.IsNullOrEmpty(error)) --> restart thread; else --> download finished*/

                        WriteLog("Start download...");
                        Searching();
                    }
                    catch (Exception e)
                    {
                        error = e.Message;
                    }

                    if (!String.IsNullOrEmpty(error))
                    {
                        Thread.Sleep(30000);
                        WriteErrorLog(error);
                        WriteLog("Try continue work...", MessageType.Warning);
                    }
                    else
                    {
                        workFlag = false;  //все нормально откачало, заканчиваем работу
                    }
                }
            }
            finally
            {
                ResultFile.Close();
                _imagesResultFile.Close();
            }
        }

        private void Searching()
        {
            if (Test)
            {
                Params.SetIntegerParam(DmConsts.LastPosition, Params.GetIntegerParam(DmConsts.StartPosition));
                Params.SetIntegerParam(DmConsts.EndPositon, Params.GetIntegerParam(DmConsts.StartPosition));
            }

            if (Params.GetIntegerParam(DmConsts.EndPositon) > StopParam)
                Params.SetIntegerParam(DmConsts.EndPositon, StopParam);

            for (int indSearchParam = Params.GetIntegerParam(DmConsts.LastPosition); indSearchParam <= Params.GetIntegerParam(DmConsts.EndPositon); indSearchParam++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastPosition, indSearchParam);
                UpdateProgress();

                WriteLog(string.Format("Process search param [{0}][{1}].",
                    Params.GetIntegerParam(DmConsts.LastPosition),
                    _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)]));

                string html = GetRedirectRequest.UrlOnly(
                    string.Format(_searchUrl, _searchParam[Params.GetIntegerParam(DmConsts.LastPosition)]),
                    Rpm);
                ParseResultPage(html);
            }
        }

        private void ParseResultPage(string html)
        {
            html = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(html.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));

            if (!RegExpr.IsMatch(html, @"(?si:>\s*Full Name\s*</th>)") || !RegExpr.IsMatch(html, @"(?si:>\s*Record Last Updated\s*</th>)"))
                throw new Exception(String.Format("Result page: {0}{1}{2}", DmConsts.ExcNeedRestart, Environment.NewLine, html));

            MatchCollection mc = RegExpr.ParseMatchCollection(html, @"(?si:<a href=""details,([\S]+).html"")");
            WriteLog(String.Format("found [{0}] matches", mc.Count));

            List<string> list = new List<string>();

            foreach (Match matchLoc in mc)
                if (!list.Contains(matchLoc.Groups[1].Value))
                    list.Add(matchLoc.Groups[1].Value);

            WriteLog(String.Format("found [{0}] id[s]", list.Count));

            for (int i = Params.GetIntegerParam(DmConsts.LastRecord); i < list.Count; i++)
            {
                //check if need abort task
                if (Ct.IsCancellationRequested)
                    break;

                Params.SetIntegerParam(DmConsts.LastRecord, i);
                string lookupKey = list[i];
                string offenderHtml = GetRequest.WithCookies(string.Format(_offenderLink, lookupKey), Rpm);
                WriteLog(String.Format("ParseOffender [{0}][{1}]", Params.GetIntegerParam(DmConsts.LastRecord), lookupKey));

                if (!RegExpr.IsMatch(offenderHtml, @"(?si:Online Sex Offender Search - Offender Information)"))
                    throw new Exception("Offenders page:" + DmConsts.ExcNeedRestart);
                
                ParseOffender(offenderHtml, lookupKey);
                UpdateRecordCount(1);
            }
            Params.SetIntegerParam(DmConsts.LastRecord, 0);
        }

        private void ParseOffender(string offenderHtml, string lookupKey)
        {
            offenderHtml = HtmlUtils.KillSpace(HtmlUtils.ReplaceSpecSymbols(offenderHtml.Replace("\r\n", " ").Replace("\t", " ").Replace("\r", " ").Replace("\n", " ")));
            using (OffendersResult or = new OffendersResult())
            {
                or.Source_State = StateName;
                or.offenderLink = string.Format(_offenderLink, lookupKey);
                or.Source_id = lookupKey;

                or.fullname = RegExpr.Parse(RegExpr.Parse(offenderHtml, @"(?si:Eye Color\s*</th>\s*</tr>\s*<tr>(.*?)</tr>)")
                , @"(?si:<td>(.*?)</td>)").Trim();
                int k = 0;
                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:Eye Color\s*</th>\s*</tr>\s*<tr>(.*?)</tr>)")
                    , @"(?si:<td align=""center"">(.*?)</td>)"))
                {
                    switch (k)
                    {
                        case 0:
                            or.Birthdate = matchLoc.Groups[1].Value.Trim(); break;
                        case 1:
                            or.sex = matchLoc.Groups[1].Value.Trim(); break;
                        case 2:
                            or.Ethnicity = matchLoc.Groups[1].Value.Trim(); break;
                        case 3:
                            or.height = matchLoc.Groups[1].Value.Trim(); break;
                        case 4:
                            or.weight = matchLoc.Groups[1].Value.Trim(); break;
                        case 5:
                            or.hair_color = matchLoc.Groups[1].Value.Trim(); break;
                        case 6:
                            or.eye_color = matchLoc.Groups[1].Value.Trim(); break;
                        default:
                            break;
                    }
                    k++;
                }

                or.AKA = Regex.Replace(
                    RegExpr.Parse(offenderHtml, @"(?si:Aliases\s*</th>\s*</tr>\s*<tr>\s*<td[^<>]*?>(.*?)</td>)"),
                    @"<[/]*?span[^<>]*?>", "").Trim();
                if (or.AKA == "N/A") or.AKA = "";
                or.marks = Regex.Replace(RegExpr.Parse(offenderHtml, @"(?si:Tattoos\s*</th>\s*</tr>\s*<tr>\s*<td[^<>]*?>(.*?)</td>)"),
                    @"<[/]*?span[^<>]*?>", "").Trim();
                if (or.marks == "N/A") or.marks = "";
                or.Status = Regex.Replace(RegExpr.Parse(offenderHtml, @"(?si:Sex Offender Status\s*</th>\s*</tr>\s*<tr>\s*<td[^<>]*?>(.*?)</td>)"),
                    @"<[/]*?span[^<>]*?>", "").Trim();
                
                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:Disposition Date\s*</th>\s*</tr>\s*(.*?)</table>)")
                    , @"(?si:<tr>(.*?)</tr>)"))
                {
                    MatchCollection mcTd = RegExpr.ParseMatchCollection(matchLoc.Groups[1].Value, @"(?si:<td[^<>]*?>(.*?)</td>)");

                    int i = 0;
                    foreach (Match td in mcTd)
                    {
                        if (i == 3) break;
                        string s = i == 2 ? "~" : ";";
                        try
                        {
                            or.Crime += HtmlUtils.KillSpace(RegExpUtils.DeleteTag(td.Groups[1].Value)) + s;
                        }
                        catch
                        { or.Crime += ";"; }
                        i++;
                    }
                }

                if (String.IsNullOrEmpty(or.Crime))
                    or.Crime = "No charges found in the records.";
                else
                    or.Crime = "Offense; Place of Offense; Disposition Date~" + or.Crime;

                
                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:Year\s*</th>\s*</tr>(.*?)</table>)")
                    , @"(?si:<tr>(.*?)</tr>)")) //5 max
                {
                    MatchCollection mcTd = RegExpr.ParseMatchCollection(matchLoc.Groups[1].Value, @"(?si:<td[^<>]*?>(.*?)</td>)");

                    int i = 0;
                    foreach (Match td in mcTd)
                    {
                        if (i == 6) break;
                        string s = i == 5 ? "~" : ";";
                        try
                        {
                            or.Vehicle += HtmlUtils.KillSpace(RegExpUtils.DeleteTag(td.Groups[1].Value)) + s;
                        }
                        catch
                        { or.Vehicle += s; }
                        i++;
                    }
                }
                if (!String.IsNullOrEmpty(or.Vehicle))
                    or.Vehicle = "Type; Make; Model; Number; Color; Year~" + or.Vehicle;

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:Residence\s*</span>\s*<table(.*?)</table>)")
                    , @"(?si:<tr>(.*?)</tr>)"))
                {
                    or.Address = HtmlUtils.KillSpace(RegExpr.Parse(matchLoc.Groups[1].Value, @"(?si:<td align=""left"">(.*?)</td>)"));
                    or.Address_date = HtmlUtils.KillSpace(RegExpr.Parse(matchLoc.Groups[1].Value, @"(?si:<td[^<>]*?class=""leftline""\s*>(.*?)</td>)"));
                }

                foreach (Match matchLoc in RegExpr.ParseMatchCollection(RegExpr.Parse(offenderHtml, @"(?si:Employment\s*</span>\s*<table(.*?)</table>)")
                    , @"(?si:<tr>(.*?)</tr>)"))
                    or.waddress = RegExpr.Parse(matchLoc.Groups[1].Value, @"(?si:<td align=""left"">(.*?)</td>)").Trim();


                string htmlImgUrl = RegExpr.Parse(offenderHtml, @"(?si:<img\s*id=""offender_photo""\s*src=""/sexoffender/resources/([\S]+).jpg"")");
                if (Params.GetBooleanParam(DmConsts.IsDownloadImg) 
                    && !String.IsNullOrEmpty(htmlImgUrl ) 
                    && !RegExpr.IsMatch(offenderHtml, @"(?si:>\s*Photo\s*:\s*<span id=""mugshot_date"">N/A<)"))
                {
                    or.Image_ID = Guid.NewGuid() + ".jpg";
                    or.ImageLink = string.Format(_imageLink, htmlImgUrl);
                    Offenders.DownloadImageWithExceptions(_imagesResultFile, String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID),
                        or.ImageLink, TaskParams.SessionId);
                }

                if (or.Image_ID != "" && !File.Exists(String.Format("{0}\\{1}\\{2}", ResultDir, DmConsts.PhotosDir, or.Image_ID)))
                    throw new Exception(DmConsts.ExcImgNotFound);

                ResultFile.Write(or.GetValues());
            }
        }

        private void UpdateProgress()
        {
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.LastPosition) > Params.GetIntegerParam(DmConsts.EndPositon))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.LastPosition), Params.GetIntegerParam(DmConsts.EndPositon),
                    DmConsts.StartPosition, DmConsts.EndPositon));
            if (Params.GetIntegerParam(DmConsts.StartPosition) > Params.GetIntegerParam(DmConsts.LastPosition))
                throw new Exception(String.Format("Invalid parameters {2}[{0}]; {3} [{1}]",
                    Params.GetIntegerParam(DmConsts.StartPosition), Params.GetIntegerParam(DmConsts.LastPosition),
                    DmConsts.StartPosition, DmConsts.LastPosition));
            UpdateProgress(((double)(Params.GetIntegerParam(DmConsts.LastPosition) - Params.GetIntegerParam(DmConsts.StartPosition))) / (Params.GetIntegerParam(DmConsts.EndPositon) - Params.GetIntegerParam(DmConsts.StartPosition) + 1));
        }
    }
}
